The U.S. stock market remained resilient Tuesday with the Nasdaq extending its winning streak to a third session as a pair of political developments dominated the news cycle.

The Dow Jones Industrial Average
DJIA, -1.24%
edged up less than a point to close at 21,409.07 after falling more than 120 points earlier. The S&P 500
SPX, -1.54%
lost 1.90 points to finish at 2,425.53. The Nasdaq Composite Index
COMP, -1.94%
rose 16.91 points, or 0.3%, to end at 6,193.30.

The market had initially turned south after Donald Trump Jr. released a chain of emails regarding a meeting in June 2016 to discuss allegedly incriminating information about Hillary Clinton as part of the Russian government’s support of his father’s presidential candidacy.

“Investors may suspect that Donald Trump, Jr., came forward with his meetings with the Russian attorney and released his emails because the FBI investigation may been catching up with him on that issue. The sense was he tried to get in front of it,” said Jack Ablin, chief investment officer at BMO Private Bank.

But after a knee-jerk reaction, stocks held their ground and eventually made up much of the deficit, helped by news that the Senate is delaying its summer recess until the third week of August to give lawmakers more time to work on key legislative matters, such as a health-care bill.

The passage of the health-care bill is viewed as critical in paving the way for other key legislative changes that are central to President Trump’s pro-growth agenda, including more business-friendly tax codes.

Wall Street has risen firmly this year, with the Dow and S&P 500 both up more than 8% thus far in 2017. The Nasdaq’s advance has been sharper, up almost 15%, boosted by an extended rally in large-capitalization technology shares, a sector that has pulled back recently.

Much of the market’s postelection rally has come on hopes that the Trump administration would push through legislation on tax reform and spending that could accelerate economic growth and stimulate corporate profits. As a result, investors have been worried that controversies with Russia will make the passage of such initiatives less likely.

“There are legitimate concerns that something could blow up with respect to the Russian scandal, and that could be enough to temper a market that has been moving up,” said Bruce McCain, chief investment strategist at Key Private Bank. “It’s fair to think that absent any good news on economic fundamentals or on legislation coming out of Washington, that additional worries about scandal can’t help the market.”

Intraday Data provided by SIX Financial Information and subject to terms of use.
Historical and current end-of-day data provided by SIX Financial Information.
All quotes are in local exchange time. Real-time last sale data for U.S. stock quotes reflect trades reported through Nasdaq only.
Intraday data delayed at least 15 minutes or per exchange requirements.